Pressure is defined as the force per unit area, with the formula f/a and measured in pascals. It varies based on the force and area involved, and fluid pressure is proportional to both the specific gravity and height of the fluid. Atmospheric pressure, which decreases with altitude, is typically measured with a barometer.

1. Science Education
Pressure

2.  What is a pressure in science?
Pressure is the force per unit area.
 The basic formula for pressure is F/A
(Force per unit area).
 SI unit of pressure is pascal

3.  Formula of pressure
a. Pressure =force / Area
b. P ~ F
c. P ~ 1/A
Pa = N/m2

4. 1. Pressure depends on the amount of force.
2. Pressure depends on the area over which
the force is applied.
 Variation of pressure

5.  Fluid pressure
The pressure exerted by a fluid, directly
proportional to the specific gravity at any point
and to the height of the fluid above the point.
 Since a fluid has no definite shape, its pressure
applies in all directions.

6.  Measuring pressure
Open tube manometer
 Pressure is measured
by pressure gauge .
 It's simplest type is
the open tube
manometer.
 This U-shaped tube
containing liquid for
measuring pressure .

7. We have two cases when it comes to the
application of pressure in daily life
 Case 1:- Small area resulting in greater
pressure
Case 2:- Large area resulting in smaller
pressure
 Applications of pressure

11.  Atmospheric pressure
 Atmospheric pressure is the force exerted on an
object by the weight of the atmosphere above it.
 Atmospheric pressure is commonly measured
with a barometer.

12.  Pressure on Earth varies with the altitude of the
surface; so air pressure on mountains is usually
lower than air pressure at sea level. As altitude
increases, atmospheric pressure decreases.
Variation of pressure

13. Thank You